Which of the following mechanisms contributes to beta-cell dysfunction in type II diabetes?

This study, which was planned to be a 50 year longitudinal study, was the world’s first large prospective study of the effects of smoking to establish a convincing linkage between tobacco smoking and lung cancer.

A 12-month-old infant who had cardiopulmonary bypass with red blood cell (RBC) and plasma infusions during surgery at 8 months is seen for a well child examination. Which vaccine may be administered at this visit? Measles, mumps, and rubella (MMR) oral polio vaccine (OPV) Pneumococcal vaccine Correct Varicella vaccine

The primary care pediatric nurse practitioner evaluates a child who awoke with a sore throat and high fever after a nap. The child appears anxious and is sitting on the parent’s lap with the neck hyperextended. The physical exam reveals stridor, drooling, nasal flaring, and retractions. What will the nurse practitioner do next? Administer a broad-spectrum intravenous antibiotic. Obtain blood and throat cultures and start antibiotic therapy. Send the child to radiology for a lateral neck radiograph. Transport the child to the hospital via emergency medical services. Correct

During a routine well child exam on a 5-year-old child, the primary care pediatric nurse practitioner auscultates a grade II/VI, harsh, late systolic ejection murmur at the upper left sternal border that transmits to both lung fields. The child has normal growth and development. What will the nurse practitioner suspect? Aortic stenosis (AS) Patent ductus arteriosus (PDA) Pulmonic stenosis Correct Tricuspid atresia

A 5-month-old infant who has a 3-day history of cough and rhinorrhea has developed symptoms of respiratory distress with audible expiratory wheezes and increased coughing. The infant’s immunizations are up-to-date. The physical exam reveals a respiratory rate of 50 breaths per minute, coarse expiratory wheezing, and prolonged expiration. An oxygen saturation is 96% on room air. What is the recommended treatment for this infant? Administer a trial of bronchodilators. Obtain a viral culture of nasal washings. Order an oral corticosteroid medication. Recommend increased fluids and close follow-up. Correct

There is a sample linear regression as follows: 

During the Civil War, soldiers routinely injected themselves with morphine to cope with pain and the tragedies of war. 

A 5-year-old child who had a repair for transposition of the great arteries shortly after birth is growing normally and has been asymptomatic since the surgery. The primary care nurse practitioner notes mild shortness of breath with exertion and, upon questioning, learns that the child has recently had a syncopal episode. What will the nurse practitioner do? Order an echocardiogram and chest radiograph. Perform pulmonary function testing. Reassure the parent that these symptoms are common. Refer the child to the cardiologist immediately. Correct

Let’s assume that we want to estimate the effect of tech innovation on individual wealth in a nation. We can measure individual wealth in a nation with GDP per capita. We can measure tech innovation with the number of patents or the number of science journal publications. In addition, we want to measure the Covid-19 pandemic effect on individual wealth as well. Therefore, we construct the dataset as follows: Patent: the number of patents in a country GDPcapita : GDP per capita = GDP/population GDPgrowth: GDP growth rate SCJournal: the number of scientific journal publications HighTechExport: the share of high-tech export in GDP Unemploy: Unemployment rate Covid: 1 data comes from 2020 (during the pandemic); 0 data comes from before the COVID-19 pandemic period. Then, we conducted correlation test among variables as follows: we want to put both the patent variable and SCJournal variable as independent variables into a linear regression. However, the high correlation between patent and SCJournal variables (i.e., 0.87) can cause _______________. In this case, we cannot trust the p-value for the coefficients of independent variables in the sample linear regression; therefore, we usually drop one of the correlated independent variables in the linear regression model.